Luminous touch pad

Abstract

A luminous touch pad includes a covering plate, a circuit board, a light guide structure and a first light-shading adhesive. The covering plate includes a first surface and a second surface. The circuit board is located under the covering plate. The circuit board includes a third surface and a fourth surface. The light guide structure is arranged between the covering plate and the circuit board. The light guide structure includes a lateral surrounding surface. An adhesive receiving space is defined by the lateral surrounding surface, a portion of the second surface and a portion of the third surface collaboratively. The first light-shading adhesive is disposed within the adhesive receiving space and arranged around the light guide structure. The first light-shading adhesive is contacted with the portion of the second surface, the portion of the third surface and the lateral surrounding surface.

1 . A luminous touch pad, comprising:
 a covering plate comprising a first surface and a second surface, wherein the first surface and the second surface are opposed to each other;   a circuit board located under the covering plate, and comprising a third surface and a fourth surface, wherein the third surface and the fourth surface are opposed to each other, and the third surface faces the second surface of the covering plate;   a light guide structure arranged between the covering plate and the circuit board, wherein the light guide structure comprises a lateral surrounding surface, and an adhesive receiving space is defined by the lateral surrounding surface, a portion of the second surface and a portion of the third surface collaboratively; and   a first light-shading adhesive disposed within the adhesive receiving space and arranged around the light guide structure, wherein the first light-shading adhesive is contacted with the portion of the second surface, the portion of the third surface and the lateral surrounding surface.   
     
     
         2 . The luminous touch pad according to  claim 1 , wherein the light guide structure comprises a light-guiding plate, a reflective layer and an adhesive layer, which are stacked on each other from top to bottom, wherein the light-guiding plate is arranged between the covering plate and the reflective layer, the adhesive layer is arranged between the reflective layer and the circuit board, the light-guiding plate comprises a light-guiding plate lateral surface, the reflective layer comprises a reflective layer lateral surface, and the adhesive layer comprises an adhesive layer lateral surface, wherein the light-guiding plate lateral surface, the reflective layer lateral surface and the adhesive layer lateral surface are collaboratively formed as the lateral surrounding surface. 
     
     
         3 . The luminous touch pad according to  claim 2 , wherein the light-guiding plate further comprises a light output surface and a bottom surface, wherein the light output surface and the bottom surface are opposed to each other, the light-guiding plate lateral surface is arranged between the light output surface and the bottom surface, the light-guiding plate lateral surface comprises a light input part, and the light input part comprises at least one notch. 
     
     
         4 . The luminous touch pad according to  claim 3 , wherein the luminous touch pad further comprises at least one light-emitting element, wherein the at least one light-emitting element is disposed within the at least one notch of the light input part, the at least one light-emitting element is electrically connected with the circuit board, and the at least one light-emitting element emits a light beam, wherein the light beam is introduced into the light-guiding plate through the light input part, and the light beam is outputted from the light output surface. 
     
     
         5 . The luminous touch pad according to  claim 1 , wherein the luminous touch pad further comprises a second light-shading adhesive, and the light guide structure further comprises plural light-shading holes, wherein the lateral surrounding surface is arranged around the plural light-shading holes, the plural light-shading holes are extended along a first direction, and the plural light-shading holes are discretely arranged along a second direction, wherein the first direction and the second direction are not in parallel with each other, and the second light-shading adhesive is formed in the plural light-shading holes. 
     
     
         6 . The luminous touch pad according to  claim 1 , wherein the covering plate has a first width, the circuit board has a second width, the light guide structure has a third width, and each of the first width and the second width is larger than the third width, wherein when the covering plate, the light guide structure and the circuit board are stacked on each other from top to bottom, the adhesive receiving space is defined by the lateral surrounding surface of the light guide structure, the portion of the second surface of the covering plate and the portion of the third surface of the circuit board collaboratively. 
     
     
         7 . A luminous touch pad, comprising:
 a covering plate comprising a first surface and a second surface, wherein the first surface and the second surface are opposed to each other;   a circuit board located under the covering plate, and comprising a third surface, a fourth surface and an end surface, wherein the third surface and the fourth surface are opposed to each other, the end surface is arranged between the third surface and the fourth surface, and the third surface faces the second surface of the covering plate;   a light guide structure arranged between the covering plate and the circuit board, wherein the light guide structure comprises a lateral surrounding surface, and an adhesive receiving space is defined by the lateral surrounding surface, the end surface and a portion of the second surface collaboratively; and   a first light-shading adhesive disposed within the adhesive receiving space and arranged around the light guide structure and the circuit board, wherein the first light-shading adhesive is contacted with the portion of the second surface, the end surface and the lateral surrounding surface.   
     
     
         8 . The luminous touch pad according to  claim 7 , wherein the luminous touch pad further comprises a second light-shading adhesive, and the light guide structure further comprises plural light-shading holes, wherein the lateral surrounding surface is arranged around the plural light-shading holes, the plural light-shading holes are extended along a first direction, and the plural light-shading holes are discretely arranged along a second direction, wherein the first direction and the second direction are not in parallel with each other, and the second light-shading adhesive is formed in the plural light-shading holes. 
     
     
         9 . The luminous touch pad according to  claim 7 , wherein the lateral surrounding surface of the light guide structure and the end surface of the circuit board are coplanar with each other. 
     
     
         10 . The luminous touch pad according to  claim 7 , wherein the covering plate has a first width, the circuit board has a second width, the light guide structure has a third width, each of the second width and the third width is smaller than the first width, and the second width is equal to the third width, wherein when the covering plate, the light guide structure and the circuit board are stacked on each other from top to bottom, the adhesive receiving space is defined by the lateral surrounding surface of the light guide structure, the portion of the second surface of the covering plate and the end surface of the circuit board collaboratively.